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Article: 27
From: Micheal Smith
Date: 2009-07-16 12:03:18 -0400
Subject: Re: Re: milter-limit on a smart-host

Anthony Howe wrote:
> Micheal Smith uttered...:
>   
>> I'm trying to limit messages on a smart host.  The problem i'm having is
>> that i only want to limit outgoing mail.  There's really no way to tell
>> what's inside/out besides subnets, or domains.  This works fine, but i'm
>> really trying to limit each individual email account within said
>> subnets/domains.  The email traffic is to volatile to just broadly apply
>> rules.  There are also far too many users to write individual rules
>> for.  So i'm wondering if there's a way i can implicitly set a single
>> rule that would do something like... limit each individual email within
>> a given domain or block?
>>     
>
> Split inbound and outbound servers; or if all your users are using Mail
> Submission port 587, then you could just run two sendmail processes one
> listening on port 25 and the other on 587 with milter-limit.
>
> However, when a message is sent between local users, it would still be
> counted against the limit.
>
> The alternative is an internal mail server and a gateway server with
> split inbound / outbound processes. Internal mail would not be counted,
> while mail reaching the gateway outbound queue is really going out and
> should be counted.
>
> This could be done on one machine using IP aliasing I suppose using 3
> sendmail processes; one listens on the LAN IP and acts as the internal
> server, one listens on port 25 on the public IP for the inbound queue,
> last one listens on a different LAN or public IP port 25 and is the
> outbound queue running milter-limit.
>
>
>   
I didn't ask how to change our setup.  I asked if it was possible with 
milter-limit, and if so how.

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